pH-Up and pH-Down are supplements used to adjust your water and nutrient solutions to the proper pH range for plants. Most plants prefer a pH range of 6.2 to 6.8. pH levels that are too low or too high can result in release of or tying up of minerals in soils that can lead to toxic levels or deficient levels of various elements.

This item is sold individually. The case size is listed for your convenience for instances where you wish to order in case quantities.